Triple

T2134881
Position Surface form Disambiguated ID Type / Status
Subject Harlem Line E46626 entity
Predicate electrifiedSection P14045 FINISHED
Object Grand Central Terminal – Southeast
Grand Central Terminal – Southeast is a key electrified segment of Metro-North Railroad’s Harlem Line running from New York City’s Grand Central Terminal to Southeast station in Putnam County.
E236082 NE FINISHED

How this triple was built (4 steps)

Every LLM step that produced this triple, in pipeline order — named-entity classification, the disambiguation choices (the exact options shown, with the pick highlighted), and the generated description. The batch + timestamp of each is in the Provenance table below.

NER Named-entity recognition gpt-5-mini
Instruction
Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).
Input
Phrase: Grand Central Terminal – Southeast | Statement: [Harlem Line, electrifiedSection, Grand Central Terminal – Southeast]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Grand Central Terminal – Southeast
Context triple: [Harlem Line, electrifiedSection, Grand Central Terminal – Southeast]
  • A. 69th Street Transportation Center area
    The 69th Street Transportation Center area is a major transit hub and surrounding district in Upper Darby, Pennsylvania, serving as a key western gateway between the suburbs and Philadelphia.
  • B. Forest Hills–71st Avenue terminal
    Forest Hills–71st Avenue terminal is a major New York City Subway station in Queens that serves as a key terminal and transfer point on the Queens Boulevard Line.
  • C. Sullivan Square station
    Sullivan Square station is a major multimodal transit hub in Boston, Massachusetts, serving MBTA Orange Line trains and numerous bus routes that connect the city and surrounding areas.
  • D. Glenmont station
    Glenmont station is a Washington Metro rapid transit station in Montgomery County, Maryland, serving as the northern terminus of the system's Red Line.
  • E. Park Place station
    Park Place station is a New York City Subway station in Lower Manhattan that serves the 2 and 3 lines and is part of a larger interconnected transit hub with nearby stations.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg Description generation gpt-5.1
Instruction
Generate a one-sentence description of the target entity. 
You are given a context triple in the form (subject, predicate, object), where the object is the target entity. 
# Instructions
Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. 
Avoid repeating the information from the triple, unless really essential.
# Response Format
Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Grand Central Terminal – Southeast
Triple: [Harlem Line, electrifiedSection, Grand Central Terminal – Southeast]
Generated description
Grand Central Terminal – Southeast is a key electrified segment of Metro-North Railroad’s Harlem Line running from New York City’s Grand Central Terminal to Southeast station in Putnam County.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Grand Central Terminal – Southeast
Target entity description: Grand Central Terminal – Southeast is a key electrified segment of Metro-North Railroad’s Harlem Line running from New York City’s Grand Central Terminal to Southeast station in Putnam County.
  • A. 69th Street Transportation Center area
    The 69th Street Transportation Center area is a major transit hub and surrounding district in Upper Darby, Pennsylvania, serving as a key western gateway between the suburbs and Philadelphia.
  • B. Forest Hills–71st Avenue terminal
    Forest Hills–71st Avenue terminal is a major New York City Subway station in Queens that serves as a key terminal and transfer point on the Queens Boulevard Line.
  • C. Sullivan Square station
    Sullivan Square station is a major multimodal transit hub in Boston, Massachusetts, serving MBTA Orange Line trains and numerous bus routes that connect the city and surrounding areas.
  • D. Glenmont station
    Glenmont station is a Washington Metro rapid transit station in Montgomery County, Maryland, serving as the northern terminus of the system's Red Line.
  • E. Park Place station
    Park Place station is a New York City Subway station in Lower Manhattan that serves the 2 and 3 lines and is part of a larger interconnected transit hub with nearby stations.
  • F. None of above. chosen

Provenance (5 batches)

The batch behind each pipeline step, in order, with when it ran. Timestamps are batch-level — stages were processed in waves, so the object chain (NER → NED1 → NEDg → NED2) reads in order, but predicate / elicitation batches can sit in a different wave.

Step Stage Batch ID Status When
creating Elicitation batch_69a88a174ab48190a5db20c132e5dccf completed March 4, 2026, 7:37 p.m.
NER Named-entity recognition batch_69abbba34b44819083ed6d93c943439f completed March 7, 2026, 5:46 a.m.
NED1 Entity disambiguation (via context triple) batch_69ae51aa86ec8190acf86ac6b26ce4f1 completed March 9, 2026, 4:50 a.m.
NEDg Description generation batch_69ae5279fb2c8190ac78023ad2974dfb completed March 9, 2026, 4:54 a.m.
NED2 Entity disambiguation (via description) batch_69ae52e94ef8819093b4070175a877e1 completed March 9, 2026, 4:56 a.m.
Created at: March 4, 2026, 7:44 p.m.